CN106571221B - A kind of preparation method of anisotropy soft-magnetic composite material - Google Patents
A kind of preparation method of anisotropy soft-magnetic composite material Download PDFInfo
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- CN106571221B CN106571221B CN201611001535.6A CN201611001535A CN106571221B CN 106571221 B CN106571221 B CN 106571221B CN 201611001535 A CN201611001535 A CN 201611001535A CN 106571221 B CN106571221 B CN 106571221B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
- H01F1/28—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder dispersed or suspended in a bonding agent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0273—Imparting anisotropy
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Abstract
The present invention relates to a kind of preparation methods of anisotropy soft-magnetic composite material.The invention is 2 ~ 80 μm of magnetic metallic powder for raw material using average grain diameter；Ball milling obtains flattening particle in the ball mill；Then it is sufficiently mixed with epoxy resin uniformly, is injected in ring mould after adding in curing agent；Mold is placed in magnetic field and is orientated, it can be in the form of three kinds according to aligned difference：First, magnet ring is horizontal positioned, without magnetic field orientating；2nd, magnet ring is horizontal positioned, and normal is perpendicular to magnetic direction；3rd, magnet ring is disposed vertically, and normal parallel is in magnetic direction；Sample takes out after curing is orientated in magnetic field.This method applies magnetic field, flattening metallic particles is made to be orientated along outer magnetic field direction in soft-magnetic composite material forming process, and anisotropic structure is presented；The anisotropy orientation structure of magnet ring inner flat magnetic powder, produces anisotropic magnetic performance：Effective permeability, loss etc..
Description
Technical field
The present invention relates to a kind of preparation methods of anisotropy soft-magnetic composite material, belong to field of material preparation.
Background technology
Soft magnetic materials has a kind of magnetic material of high magnetic permeability and low-coercivity.Soft magnetic materials easily magnetizes, and is also easy to
Demagnetization, is widely used in electrical equipment and electronic equipment.It is soft can be divided into soft magnetic ferrite, metal for the huge number of soft magnetic materials
Magnetic material and soft-magnetic composite material.Soft magnetic ferrites have high resistivity, therefore with the obvious advantage in medium-high frequency section, but shortcoming
It is ferrite for ferrimagnetism substance, therefore saturation magnetization is relatively low, can not meet the increasingly increased power of electronic equipment will
It asks, therefore can not be applied in numerous high-grade, precision and advanced fields.The advantages of soft magnetic metal, is its saturation magnetization height, but shortcoming is gold
Eddy-current loss is very big when it is low to belong to resistivity, therefore using in high frequency, and magnetic conductivity drastically declines, therefore can not be under high frequency
It uses, this is for the shortcomings that soft magnetic materials is fatal.
Magnetic particle is dispersed in nonmagnetics and is formed by soft-magnetic composite material.It is closed with traditional soft magnetic metal
Gold is compared with Ferrite Material, it has the advantages of many uniquenesses：Magnetic metal particle is dispersed in non-conductor object, it is possible to reduce
High frequency eddy current losses improve applying frequency；Both pressure sintering can be taken to be processed into powder core, present plastic engineering can also be utilized
Technology, injection are manufactured into the magnet of complicated shape；Small with density, light-weight, production efficiency is high, at low cost, product repeatability
With consistency it is good the advantages that.Shortcoming is due to being separated between magnetic particle by nonmagnetic material, and magnetic circuit partition, magnetic conductivity is typically now
Within 100.
Commercial soft-magnetic composite material system includes now：Fe, FeSi, FeSiAl, FeNi and FeNiMo etc..Using insulation
Medium segmentation magnetic-particle is conducive to the raising of system resistivity, significantly reduces eddy-current loss.Recently there is researcher's discovery, it will
After magnetic-particle flattening, the Kelvin effect of metal material is reduced, can further reduce the eddy-current loss of system.Meanwhile
After metallic magnetic grain flattening, shape anisotropy can be generated, due to the influence of demagnetizing field, along flattening particle not Tongfang
To magnetization characteristic can there were significant differences.But it due to limitations such as preparation principle and preparation processes, is utilized at present still without researcher
This characteristic prepares anisotropy soft-magnetic composite material.
For more than, the present invention is prepared for a kind of anisotropy soft magnetism composite wood using the methods of flattening, magnetization orientation
Material.
Invention content
The purpose of the present invention is to provide a kind of preparation methods of anisotropy soft-magnetic composite material.
The present invention the specific steps are：
1）Material prepares
It for 2 ~ 80 μm of magnetic metallic powder is raw material to select average grain diameter, metal powder can be iron powder, iron silica flour,
Iron aluminum silicon powder, iron nickel powder or iron nickel molybdenum powder；
2）Flattening
Metal powder is placed in ball mill, selects ratio of grinding media to material as 5:1~20：1, n-hexane or absolute ethyl alcohol are selected to be situated between
Matter, control drum's speed of rotation are 300 ~ 600r/min, and control Ball-milling Time is 0.1 ~ 10h, obtains the piece that flattening works well
Shape metal powder；
3）Mixing, casting
100 parts of epoxy resin and 20~500 parts of metal powders are thoroughly mixed, add 1~15 part of curing agent two
Ethylene triamine continues to stir 30s, inject in ring mould；
4）Curing is orientated in magnetic field
Mold after casting, which is positioned over rapidly in the magnetic field of horizontal direction, to be orientated, and by aligned difference, can be divided into three
Kind：（1）, magnet ring it is horizontal positioned, without magnetic field orientating；（2）, magnet ring it is horizontal positioned, normal is perpendicular to magnetic direction；（3）, magnet ring
It is disposed vertically, normal parallel is in magnetic direction；Sample takes out after curing is orientated in magnetic field.
Sample after orientation, through its topology discovery of sem analysis, flat metallic particles in magnet ring there are different orientation,
And then show anisotropic magnetic property.
It is an advantage of the invention that：
1st, in soft-magnetic composite material forming process, apply magnetic field, flattening metallic particles is made to be carried out along outer magnetic field direction
Anisotropic structure is presented in orientation；
2nd, the anisotropy orientation structure of magnet ring inner flat magnetic powder, produces anisotropic magnetic performance：Effective magnetic conductance
Rate, loss etc..
Description of the drawings
Fig. 1 is the XRD spectrum before and after FeSiAl magnetic powder ball millings；
Fig. 2 is the hysteresis loop before and after FeSiAl magnetic powder ball millings；
Fig. 3 is the SEM photograph of the schematic diagram of magnetic field orientating, the distributed model of FeSiAl magnetic powders and horizontal section, wherein：
（1）Magnet ring is horizontal positioned, without magnetic field orientating；（2）Magnet ring is horizontal positioned, and normal is perpendicular to magnetic direction；（3）Magnet ring is vertically put
It puts, normal parallel is in magnetic direction；
The Effective permeability of Fig. 4 different orientation FeSiAl soft-magnetic composite material samples, wherein：（a）Magnet ring is horizontal positioned, does not have
There is magnetic field orientating；（b）Magnet ring is horizontal positioned, and normal is perpendicular to magnetic direction；（c）Magnet ring is disposed vertically, and normal parallel is in magnetic field
Direction；
The loss of Fig. 5 different orientation FeSiAl soft-magnetic composite material samples, wherein：（a）Magnet ring is horizontal positioned, without magnetic field
Orientation；（b）Magnet ring is horizontal positioned, and normal is perpendicular to magnetic direction；（c）Magnet ring is disposed vertically, and normal parallel is in magnetic direction.
Specific embodiment
With reference to embodiment, the present invention will be described in detail, so as to more fully understand the purpose of the present invention, feature and
Advantage.Although the present invention is described with reference to the specific embodiment, it is not intended that the invention be limited to described
Specific embodiment.On the contrary, it is carried out to the embodiment in the protection domain defined in the claims in the present invention can be included
Replacement, improvement and equivalent embodiment, belong to protection scope of the present invention.For the technological parameter not marked especially,
It can routinely technology carry out.
The present invention the specific steps are：
1）Material prepares
It for 2 ~ 80 μm of magnetic metallic powder is raw material to select average grain diameter, metal powder can be iron powder, iron silica flour,
Iron aluminum silicon powder, iron nickel powder or iron nickel molybdenum powder；
2）Flattening
Metal powder is placed in ball mill, selects ratio of grinding media to material as 5:1~20：1, n-hexane or absolute ethyl alcohol are selected to be situated between
Matter, control drum's speed of rotation are 300 ~ 600r/min, and control Ball-milling Time is 0.1 ~ 10h, obtains the piece that flattening works well
Shape metal powder；
3）Mixing, casting
100 parts of epoxy resin and 20~500 parts of metal powders are thoroughly mixed, add 1~15 part of curing agent two
Ethylene triamine continues to stir 30s, inject in ring mould；
4）Curing is orientated in magnetic field
Mold after casting, which is positioned over rapidly in the magnetic field of horizontal direction, to be orientated, and by aligned difference, can be divided into three
Kind：First, magnet ring is horizontal positioned, without magnetic field orientating；2nd, magnet ring is horizontal positioned, and normal is perpendicular to magnetic direction；3rd, magnet ring hangs down
Straight to place, normal parallel is in magnetic direction；Sample takes out after curing is orientated in magnetic field.
Sample after orientation, through its topology discovery of sem analysis, flat metallic particles in magnet ring there are different orientation,
And then show anisotropic magnetic property.
Embodiment 1：
The specific steps are：
1）Material prepares
It for 2 μm of magnetic powder is raw material to select average grain diameter；
2）Flattening
Metal powder is placed in ball mill, selects ratio of grinding media to material as 5:1, n-hexane is selected as medium, and control ball mill turns
Speed is 300r/min, and control Ball-milling Time is 0.1h, obtains the flake metal powder that flattening works well；
3）Mixing, casting
100 parts of epoxy resin and 20 parts of iron powders are thoroughly mixed, add 1 part of curing agent diethylenetriamine, are continued
30s is stirred, is injected in ring mould；
4）Curing is orientated in magnetic field
Mold after casting, which is positioned over rapidly in the magnetic field of horizontal direction, to be orientated, and by aligned difference, can be divided into three
Kind：First, magnet ring is horizontal positioned, without magnetic field orientating；2nd, magnet ring is horizontal positioned, and normal is perpendicular to magnetic direction；3rd, magnet ring hangs down
Straight to place, normal parallel is in magnetic direction；Sample takes out after curing is orientated in magnetic field.
To the sample of embodiment 1, through its topology discovery of sem analysis, flat iron powder in magnet ring there are different orientation, into
And show anisotropic magnetic property.
Embodiment 2：
The specific steps are：
1）Material prepares
It for 8 μm of Armco magnetic iron silica flour is raw material to select average grain diameter；
2）Flattening
Metal powder is placed in ball mill, selects ratio of grinding media to material as 8：1, absolute ethyl alcohol is selected as medium, controls ball mill
Rotating speed is 400r/min, and control Ball-milling Time is 1h, obtains the flake metal powder that flattening works well；
3）Mixing, casting
100 parts of epoxy resin and 50 parts of iron silica flours are thoroughly mixed, add 3 parts of curing agent diethylenetriamines, after
Continuous stirring 30s, injects in ring mould；
4）Curing is orientated in magnetic field
Mold after casting, which is positioned over rapidly in the magnetic field of horizontal direction, to be orientated, and by aligned difference, can be divided into three
Kind：First, magnet ring is horizontal positioned, without magnetic field orientating；2nd, magnet ring is horizontal positioned, and normal is perpendicular to magnetic direction；3rd, magnet ring hangs down
Straight to place, normal parallel is in magnetic direction；Sample takes out after curing is orientated in magnetic field.
To the sample of embodiment 2, through its topology discovery of sem analysis, flat iron silica flour in magnet ring there are different orientation,
And then show anisotropic magnetic property.
Embodiment 3：
The specific steps are：
1）Material prepares
It for 16 μm of Armco magnetic iron aluminum silicon powder is raw material to select average grain diameter；
2）Flattening
Metal powder is placed in ball mill, selects ratio of grinding media to material as 12：1, n-hexane is selected as medium, and control ball mill turns
Speed is 500r/min, and control Ball-milling Time is 3h, obtains the flake metal powder that flattening works well；
3）Mixing, casting
100 parts of epoxy resin and 80 parts of iron aluminum silicon powders are thoroughly mixed, add 6 parts of curing agent diethylenetriamines,
Continue to stir 30s, inject in ring mould；
4）Curing is orientated in magnetic field
Mold after casting, which is positioned over rapidly in the magnetic field of horizontal direction, to be orientated, and by aligned difference, can be divided into three
Kind：First, magnet ring is horizontal positioned, without magnetic field orientating；2nd, magnet ring is horizontal positioned, and normal is perpendicular to magnetic direction；3rd, magnet ring hangs down
Straight to place, normal parallel is in magnetic direction；Sample takes out after curing is orientated in magnetic field.
To the sample of embodiment 3, through its topology discovery of sem analysis, there are differences in magnet ring to take for flat iron aluminum silicon powder
To, and then show anisotropic magnetic property.
Embodiment 4：
The specific steps are：
1）Material prepares
It for 40 μm of Armco magnetic iron nickel powder is raw material to select average grain diameter；
2）Flattening
Metal powder is placed in ball mill, selects ratio of grinding media to material as 16：1, absolute ethyl alcohol is selected as medium, controls ball mill
Rotating speed is 500r/min, and control Ball-milling Time is 5h, obtains the flake metal powder that flattening works well；
3）Mixing, casting
100 parts of epoxy resin and 200 parts of iron nickel powders are thoroughly mixed, add 8 parts of curing agent diethylenetriamines, after
Continuous stirring 30s, injects in ring mould；
4）Curing is orientated in magnetic field
Mold after casting, which is positioned over rapidly in the magnetic field of horizontal direction, to be orientated, and by aligned difference, can be divided into three
Kind：First, magnet ring is horizontal positioned, without magnetic field orientating；2nd, magnet ring is horizontal positioned, and normal is perpendicular to magnetic direction；3rd, magnet ring hangs down
Straight to place, normal parallel is in magnetic direction；Sample takes out after curing is orientated in magnetic field.
To the sample of embodiment 4, through its topology discovery of sem analysis, flat iron nickel powder in magnet ring there are different orientation,
And then show anisotropic magnetic property.
Embodiment 5：
The specific steps are：
1）Material prepares
It for 80 μm of Armco magnetic iron nickel molybdenum powder is raw material to select average grain diameter；
2）Flattening
Metal powder is placed in ball mill, selects ratio of grinding media to material as 20：1, n-hexane is selected as medium, and control ball mill turns
Speed is 600r/min, and control Ball-milling Time is 10h, obtains the flake metal powder that flattening works well；
3）Mixing, casting
100 parts of epoxy resin and 500 parts of iron nickel molybdenum powders are thoroughly mixed, add 15 parts of curing agent divinyls three
Amine continues to stir 30s, inject in ring mould；
4）Curing is orientated in magnetic field
Mold after casting, which is positioned over rapidly in the magnetic field of horizontal direction, to be orientated, and by aligned difference, can be divided into three
Kind：First, magnet ring is horizontal positioned, without magnetic field orientating；2nd, magnet ring is horizontal positioned, and normal is perpendicular to magnetic direction；3rd, magnet ring hangs down
Straight to place, normal parallel is in magnetic direction；Sample takes out after curing is orientated in magnetic field.
To the sample of embodiment 5, through its topology discovery of sem analysis, there are differences in magnet ring to take for flat iron nickel molybdenum powder
To, and then show anisotropic magnetic property.
Claims (1)
1. a kind of preparation method of anisotropy soft-magnetic composite material, it is characterised in that its specific steps are：
1）Material prepares
It for 2 ~ 80 μm of magnetic metallic powder is raw material to select average grain diameter, and metal powder can be iron powder, iron silica flour, iron silicon
Aluminium powder, iron nickel powder or iron nickel molybdenum powder；
2）Flattening
Metal powder is placed in ball mill, selects ratio of grinding media to material as 5:1~20：1, n-hexane or absolute ethyl alcohol are selected as medium, are controlled
Drum's speed of rotation processed is 300 ~ 600r/min, and control Ball-milling Time is 0.1 ~ 10h, obtains the sheet metal that flattening works well
Powder；
3）Mixing, casting
100 parts of epoxy resin and 20~500 parts of metal powders are thoroughly mixed, add 1~15 part of curing agent divinyl
Triamine continues to stir 30s, inject in ring mould；
4）Curing is orientated in magnetic field
Mold after casting, which is positioned over rapidly in the magnetic field of horizontal direction, to be orientated, and by aligned difference, can be divided into two kinds：
First, magnet ring is horizontal positioned, and normal is perpendicular to magnetic direction；2nd, magnet ring is disposed vertically, and normal parallel is in magnetic direction；Sample exists
It is taken out after orientation curing in magnetic field.
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| CN106571221B true CN106571221B (en) | 2018-07-06 |
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| CN107705954A (en) * | 2017-08-16 | 2018-02-16 | 无锡斯贝尔磁性材料有限公司 | A kind of compound magnet ring of soft magnetism and preparation method thereof |
| CN108565109B (en) * | 2018-06-11 | 2020-09-25 | 中国计量大学 | Preparation method of soft magnetic composite material |
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| CN101226801A (en) * | 2007-11-27 | 2008-07-23 | 浙江大学 | Method for manufacturing iron base alloy electromagnetic-interference-resistance |
| CN104036902A (en) * | 2014-05-28 | 2014-09-10 | 浙江明贺钢管有限公司 | Preparing method of metal magnetic powder core |
| CN104616854A (en) * | 2014-12-30 | 2015-05-13 | 横店集团东磁股份有限公司 | Electromagnetic interference noise suppression sheet and manufacturing method thereof |
| CN105537581A (en) * | 2016-01-11 | 2016-05-04 | 横店集团东磁股份有限公司 | Noise suppression piece and preparation method thereof |
| CN106404568A (en) * | 2016-10-26 | 2017-02-15 | 中国科学院武汉岩土力学研究所 | True/false-triaxial test device capable of measuring dense rock gas permeability |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3641796B2 (en) * | 1999-10-18 | 2005-04-27 | Ｎｅｃトーキン株式会社 | Electromagnetic interference suppressor |
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2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101226801A (en) * | 2007-11-27 | 2008-07-23 | 浙江大学 | Method for manufacturing iron base alloy electromagnetic-interference-resistance |
| CN104036902A (en) * | 2014-05-28 | 2014-09-10 | 浙江明贺钢管有限公司 | Preparing method of metal magnetic powder core |
| CN104616854A (en) * | 2014-12-30 | 2015-05-13 | 横店集团东磁股份有限公司 | Electromagnetic interference noise suppression sheet and manufacturing method thereof |
| CN105537581A (en) * | 2016-01-11 | 2016-05-04 | 横店集团东磁股份有限公司 | Noise suppression piece and preparation method thereof |
| CN106404568A (en) * | 2016-10-26 | 2017-02-15 | 中国科学院武汉岩土力学研究所 | True/false-triaxial test device capable of measuring dense rock gas permeability |
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Effective date of registration: 20180518 Address after: 511450 self compiled D8 workshop, No. 8, Jia Hong Road, Shibian village, Shiji Town, Panyu District, Guangzhou, Guangdong. Applicant after: Guangzhou Tianzi New Material Science and Technology Co., Ltd Address before: 311112 15-1-101, Ming Ya court, Yuhang Ancient District, Hangzhou, Zhejiang Applicant before: Peng Xiaoling |
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